:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f8f9fa;
}

.card {
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1) !important;
}

.feature-icon {
    width: 60px;
    height: 60px;
    line-height: 60px;
}

.badge-custom {
    font-size: 0.85rem;
    padding: 0.4em 0.8em;
}

.club-logo {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.activity-cover {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.topic-card {
    border-left: 3px solid var(--primary-color);
}

.comment-box {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-lg {
    width: 80px;
    height: 80px;
}

.btn-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.status-badge-0 {
    background-color: #28a745;
}

.status-badge-1 {
    background-color: #007bff;
}

.status-badge-2 {
    background-color: #6c757d;
}

.status-badge-3 {
    background-color: #dc3545;
}

.interest-tag {
    display: inline-block;
    padding: 5px 12px;
    margin: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 0.2s;
}

.interest-tag:hover {
    transform: scale(1.05);
}

.interest-tag.selected {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.points-display {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 20px;
    border-radius: 10px;
}

.badge-item {
    text-align: center;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.badge-icon {
    font-size: 3rem;
}

.member-card {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
}

.timeline-item {
    position: relative;
    padding-left: 30px;
    padding-bottom: 20px;
    border-left: 2px solid #dee2e6;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--primary-color);
}

.timeline-item:last-child {
    border-left: none;
}

@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section p {
        font-size: 1rem;
    }
}

